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Finding the Fourth Proportional to 118,896.53, 164,078.55 and 67,916

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Solution

The fourth proportional to 118,896.53, 164,078.55 and 67,916 is: 93,724.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,896.53 : 164,078.55 = 67,916 : x
  2. Step 2: Convert to fraction form
    118,896.53/164,078.55 = 67,916/x
  3. Step 3: Cross multiply
    118,896.53x = 164,078.55 × 67,916
  4. Step 4: Simplify right side
    118,896.53x = 11,143,558,801.80
  5. Step 5: Solve for x
    x = 11,143,558,801.80/118,896.53
  6. Step 6: Final answer
    x = 93,724.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.